What is the best way to farm exotics in Destiny 2?

Veteran players have been doing this for ages, but New Light players probably have no clue where to start farming exotics. 

unknown has a quick video up giving his opinion and we agree with it!  Huzzah.

If you want to farm exotics (and it will be a HUGE grind) then simply run 920 or 950 Nightfalls.  The video shows you how to access these, so make sure you watch it.  

unknown also includes some tips that I thought were obvious, but in hindsight would not be to new players.   

Watch the video!

Do you have a better way to farm exotics?  Spill the beans!